Physics Final Exam Review

Front

What is inertia?

Back

Inertia is the property of an object to resist changes in its state of motion. Objects in motion tend to remain in motion, and objects at rest tend to remain at rest unless acted upon by a net external force.

Front

True or False: Acceleration only occurs when an object speeds up.

Back

False. Acceleration can also occur when an object slows down or changes direction.

Front

What does it mean when no net force is applied to an object?

Back

When no net force is applied, the object either remains at rest or continues to move at a constant velocity.

Front

What is the acceleration of two objects dropped from the same height in a vacuum?

Back

Both objects, regardless of their mass, will have the same acceleration due to gravity, which is approximately 9.81 m/s².

Front

What is the unit of power?

Back

The unit used to measure power is the Watt (W).

Front

Define acceleration.

Back

Acceleration is the rate of change of velocity of an object. It can be caused by an increase or decrease in speed or a change in direction.

Front

What is the formula for calculating force?

Back

Force (F) is calculated using the formula F = mass (m) × acceleration (a).

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, measured in kilograms (kg), while weight is the force exerted by gravity on that mass, measured in Newtons (N).

Front

What is Newton's First Law of Motion?

Back

Newton's First Law states that an object at rest will stay at rest, and an object in motion will stay in motion at a constant velocity unless acted upon by a net external force.

Front

What is the relationship between mass and inertia?

Back

Inertia is directly related to mass; the greater the mass of an object, the greater its inertia and resistance to changes in motion.